g04 - General Legislation in Belgium


In Belgium, the fulfilment of mechanical resistance and stability, safety in the case of fire and safety in use requirements rely on the Eurocodes, which contain harmonised evaluation methods for the different characteristics considered. Particular performance levels are stated by national authorities (or regional/local). In the Belgian case, performance levels are added to the Eurocodes by means of an “Annexe National- ANB” (National Annex).

Only aspects related with Building Integrated Photovoltaic (BIPV) products will be considered, specially focused on envelopes (roofs). It has been checked that requirements related to hygiene, health and the environment are not applicable on BIPV systems.

Protection against noise essential requirement is regulated in Belgium through European standards for test and calculation methods and Belgian standards defining performance levels. Hygiene, health and the environment requirements are mainly related to water quality, and thus not directly related to BFIRST project, so this essential requirement has not been analysed in this document.

Regarding Energy and heat conservation, Belgian standards establish the accepted thermal transmission calculation methods in accordance with European standards. Maximum U values are established for each Belgian region by building typology. European Directive 2002/91/EC for the energy efficiency in buildings has also been transposed into Belgian regulations.

The Structural Eurocodes are an integrated set of European standards related to the design and sizing of buildings and civil engineering works, including their fundament and their resistance to seismic actions.

10 Eurocodes have been developed and published:

  • (Eurocode 0) Basis of structural design
  • (Eurocode 1) Actions on structures
  • (Eurocode 2) Design of concrete structures
  • (Eurocode 3) Design of steel structures
  • (Eurocode 4) Design of composite steel and concrete structures
  • (Eurocode 5) Design of timber structures
  • (Eurocode 6) Design of masonry structures
  • (Eurocode 7) Geotechnical design
  • (Eurocode 8) Design of structures for earthquake resistance
  • (Eurocode 9) Design of aluminium structures

Almost all of these have been endorsed in Belgium with a“Document d’Application Nationale”, DAN (National Application Document).

In general terms, the state of standardization in Belgium related to the Eurocodes is as follows:

Every Eurocode (EN) with its corresponding Belgian national annex (ANB) becomes the reference standard within its application field.

For a given Eurocode, while its corresponding ANB is not published, both Belgian standards and Eurocode pre-standards (ENV) can be used. However, it is strongly recommended to use the ENV with its document of national application.

A standard is never compulsory in Belgium unless this is explicitly expressed in the construction project description. However, accepted standards during the project development will be used in case of incidence.